#include<iostream>
using namespace std;
int main(){
	int a[50],n,c;
	while(cin>>n){
		c=0;
		while(n>0){
			a[c]=n%2;
			c++;
			n/=2;	
		}
		for(int i=c-1;i>=0;i--){
			cout<<a[i];
		}
		cout<<endl;
	}



}

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